<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"/>
    <title></title>
    <style>
        html,body {
            width: 100%;
            height: 100%;
        }
        * {
            margin: 0;
            padding: 0;
        }
        .jd_layout {
            width: 100%;
            height: 100%;
        }
        .header {
            width: 100%;
            height: 50px;
            background-color: #ccc;
            position: fixed;
        }
        .jd_content {
            width: 100%;
            height: 100%;
            padding-top: 50px;
            box-sizing: border-box;
        }
        .content_left {
            width: 100px;
            height: 100%;
            float: left;
            background-color: yellow;
        }
        .content_right {
            height: 100%;
            margin-left: 100px;
            background-color: red;
        }
    </style>
</head>
<body>
    <div class="jd_layout">
        <div class="header"></div>
        <div class="jd_content">
            <div class="content_left"></div>
            <div class="content_right"></div>
        </div>
    </div>
</body>
</html>